关键字：Overall water splitting; Oxygen evolution reaction; Hydrogen evolution reaction; van der Waals assembly; Co3O4; MnO2

摘要：Developing high-efficiency and low-cost electrocatalyst is significant for the application of water splitting technology. Herein, Co3O4 nanoparticles and MnO2 nanosheets are separately synthesized and subsequently assembled into a unique 0/2-dimensional heterostructure via van der Waals interactions. The consequent composites expose abundant accessible active sites and expedite the reaction kinetics, which can be testified by the superiorities in Tafel slope, exchange current density and double-layer capacitance, only requiring overpotentials of 355 and 129 mV for oxygen and hydrogen evolution reactions in 1.0 M KOH at 10 mA cm(-2), respectively. Moreover, a cell voltage of 1.660 V can drive the electrolyzer at 10 mA cm(-2). Benefitted from robust integration, the original aggregation and restacking of individual materials have been overcome, thereby leading to superior elelctrocatalysis durability. This facile and universal strategy may inspire the researchers on the design and construction of advanced functional composites. (c) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (c) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

卷号：46

期号：17

是否译文：否